Trailing the Killer

After four fur trappers are slain and their furs stolen, Corporal Rod Webb of the Royal Northwest Mounted Police sets out for their village. En route, he and his German Shepherd, Chinook, encounter another trapper, Henri, unconscious on the trail, and the furs he was delivering to the factor, McTavish, stolen. Chinook trails the would-be-killer and bites a piece of cloth from his coat before he escapes. Webb leaves Henri with Greta while he investigates, aided by an Indian servant and the, wife of the superintendent of the trading company that employs McTavish.

Rin-Tin-Tin is saved from the beatings of a trapper by Ed Nolan, a shiftless trapper himself, and 'Rinty" follows Nolan home to his cabin but refuses to enter. Nolan takes him to the home of Mary Mallory, the girl he has failed to win as his wife because of his ways, and in their mutual love of 'Rinty," a new understanding is born and Nolan goes to work.

Rinty is a police-dog assigned to a young Scotland Yard police-officer who covers the Limehouse district of London.

A German Shepherd puppy is "adopted" by a wolf pack in the snowy and frozen Great North and raised by them as one of their own. A few years later he comes upon a fur trapper and saves the man from certain death, and begins to feel a kinship with him that is stronger than the one he has with his adopted pack.

A girl engaged to a member of the Royal Mounted Police is forced to marry a vicious blackmailer after he gains incriminating evidence on her father.

A lawman, his dog and his trusty white stallion fight a gang of outlaws.

The Three Mesquiteers are forced to track down a train robbery ring after some of the gang hijack their truck for a getaway and the police conclude they are part of the gang, an identification which is just fine with the gang's nameless chief.

Jimmy lives in the tranquil town of Eagle Rock, Louisiana, with his father, stepmother and his best friend Rainy, a German Shepherd. When Jimmy's father gets a promotion, the family must relocate to an apartment in New York City that has a strict no pet policy. Unwilling to let his master go without a fight, Rainy embarks on a cross-country journey to New York but navigating the Big Apple is just the beginning of his challenging adventure.

A woman and her weakling brother inherit a mine. When the brother commits suicide the guide is accused of murder.

A boy tries to protect his dog, a German shepherd that served with U.S. Army forces after it begins attacking strangers several years after the war.

In his dedicated pursuit of technology that will aid pilots to safely "fly blind" during adverse conditions, aerial innovator Ken Gordon is literally blinded in an accident, but this setback doesn't deter him from his goal.

The disinherited nephew of an aviation magnate plots to get a share of his uncle’s millions. He causes the near-death of his cousin when a bomb placed in his plane explodes in mid-air. He then hires thugs to abduct the uncle in order to force him to give over part of his fortune, but is foiled by the arrival of a cousin and police.